ব্যাখ্যা
The correct answer is (b) Let us respect our teacher.
Sentence Transformation Analysis:
The original sentence is Assertive. To convert it into an Imperative sentence, the structure changes as follows:
When the subject is "we" and the sentence expresses a suggestion, advice, or request, the Imperative form uses "Let us + Base Verb".
Formula: We should + V1 → Let us + V1
We should respect → Let us respect our teacher.
✗ Option (a): "Respect our teacher" — this is 2nd person imperative (You), not "we".
✗ Option (c): Changes the meaning entirely (negative).
✗ Option (d): Passive voice transformation, not imperative.
Source: A Practical English Grammar – Thomson & Martinet; Wren & Martin.